in reply to Re: Another 'ode to backslash' ;-)
in thread Another 'ode to backslash' ;-)

There is an error in your code. See perldoc perlop
or see perlop

A single-quoted, literal string. A backslash represents a
backslash unless followed by the delimiter or another backslash,
in which case the delimiter or backslash is interpolated.

So '\' don't is what you expect. You have to write '\\' instead.
Yeah, it's tricky. Note that
print '\\\machine';
is the same as
print '\\\\machine';
but not
print '\\machine';
You can use q;\\; if you want to obfuscate more.